Sinan Simsir, MD
NPI 1528142445 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Dubuque, IA
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sinan Simsir, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Dubuque, IA (NPI 1528142445).
Provider details
- NPI number
- 1528142445
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 60358-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
63 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Harvest of Vein Using an Endoscope33508 | 17 | $14 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 17 | $9 |
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 15 | $1,350 |
| Replacement of Aortic Valve Through the Skin and Femoral Artery33361 | 14 | $652 |
Typical Medicare-allowed amounts for these services range $9–$1,350 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$67 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2023-07-31
- Certified
- 2023-07-31
Frequently asked questions
- What is Sinan Simsir's NPI number?
- Sinan Simsir's National Provider Identifier (NPI) is 1528142445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sinan Simsir's specialty?
- Sinan Simsir is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Sinan Simsir located?
- Sinan Simsir's practice location on file with NPPES is 1000 Langworthy St, Dubuque, IA 52001-7365.
- What is Sinan Simsir's phone number?
- The practice phone number listed in the NPPES registry for Sinan Simsir is (563) 584-3445.
- Does Sinan Simsir accept Medicare?
- Sinan Simsir is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sinan Simsir's NPI active?
- Yes — Sinan Simsir's NPI (1528142445) is active in the NPPES registry as of the last update on 2023-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.